if the mean of 4,7,8,6,,x is 6 then find x.
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mean = sum of observation÷ no.of observation
6=4+7+8+6+x ÷ 5
6 =25+x÷5
30-25=x
therefore,x=5
6=4+7+8+6+x ÷ 5
6 =25+x÷5
30-25=x
therefore,x=5
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